x86: uaccess: use errret as error value in __put_user_size()

Impact: cleanup

In __put_user_size() macro errret is used for error value.
But if size is 8, errret isn't passed to__put_user_asm_u64().
This behavior is inconsistent.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h
index b9a2415..b685ece 100644 (file)
--- a/arch/x86/include/asm/uaccess.h
+++ b/arch/x86/include/asm/uaccess.h
@@ -186,7 +186,7 @@ extern int __get_user_bad(void);
 
 
 #ifdef CONFIG_X86_32
-#define __put_user_asm_u64(x, addr, err)                               \
+#define __put_user_asm_u64(x, addr, err, errret)                       \
        asm volatile("1:        movl %%eax,0(%2)\n"                     \
                     "2:        movl %%edx,4(%2)\n"                     \
                     "3:\n"                                             \
@@ -197,7 +197,7 @@ extern int __get_user_bad(void);
                     _ASM_EXTABLE(1b, 4b)                               \
                     _ASM_EXTABLE(2b, 4b)                               \
                     : "=r" (err)                                       \
-                    : "A" (x), "r" (addr), "i" (-EFAULT), "0" (err))
+                    : "A" (x), "r" (addr), "i" (errret), "0" (err))
 
 #define __put_user_asm_ex_u64(x, addr)                                 \
        asm volatile("1:        movl %%eax,0(%1)\n"                     \
@@ -211,8 +211,8 @@ extern int __get_user_bad(void);
        asm volatile("call __put_user_8" : "=a" (__ret_pu)      \
                     : "A" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx")
 #else
-#define __put_user_asm_u64(x, ptr, retval) \
-       __put_user_asm(x, ptr, retval, "q", "", "Zr", -EFAULT)
+#define __put_user_asm_u64(x, ptr, retval, errret) \
+       __put_user_asm(x, ptr, retval, "q", "", "Zr", errret)
 #define __put_user_asm_ex_u64(x, addr) \
        __put_user_asm_ex(x, addr, "q", "", "Zr")
 #define __put_user_x8(x, ptr, __ret_pu) __put_user_x(8, x, ptr, __ret_pu)
@@ -289,7 +289,8 @@ do {                                                                        \
                __put_user_asm(x, ptr, retval, "l", "k", "ir", errret); \
                break;                                                  \
        case 8:                                                         \
-               __put_user_asm_u64((__typeof__(*ptr))(x), ptr, retval); \
+               __put_user_asm_u64((__typeof__(*ptr))(x), ptr, retval,  \
+                                  errret);                             \
                break;                                                  \
        default:                                                        \
                __put_user_bad();                                       \